Outdent selected task (promote subtask)

`Alt` + `Shift` + `Arrow Left`

All hotkeys for Microsoft Projects 2010 (Windows)

Navigate Gantt Chart and Select Tasks Move between Tasks	`Arrow Keys`
Navigate Gantt Chart and Select Tasks Jump first cell / jump to last cell in row	`Home` / `End`
Navigate Gantt Chart and Select Tasks Jump to first row / jump to last row	`Ctrl` + `Arrow Up` / `Ctrl` + `Arrow Down`
Navigate Gantt Chart and Select Tasks Jump to first cell / jump to last cell	`Ctrl` + `Home` / `Ctrl` + `End`
Navigate Gantt Chart and Select Tasks Select current row	`Shift` + `Space`
Navigate Gantt Chart and Select Tasks Select current column	`Ctrl` + `Space`
Navigate Gantt Chart and Select Tasks With shift pressed, extend selection of cell (or of row/column if selected prior)	`Shift` + `Arrow Keys`
Navigate Gantt Chart and Select Tasks Extend selection to beginning / to end of document. To select all, press ctrl+home, then ctrl+shift+end	`Ctrl` + `Shift` + `Home` / `Ctrl` + `Shift` + `End`
Navigate Gantt Chart and Select Tasks With active selection: move up / move down	`Enter` / `Shift` + `Enter`
Navigate Gantt Chart and Select Tasks With active selection: move to the right / move to the left	`Tab` / `Shift` + `Tab`
Navigate Gantt Chart and Select Tasks With Column Filter active: Remove all Filters	`F3`
Manage Tasks Change task to 'Auto Schedule'	`Ctrl` + `Shift` + `A`
Manage Tasks Change task to 'Manually Schedule'	`Ctrl` + `Shift` + `M`
Manage Tasks Indent selected task (make it a subtask)	`Alt` + `Shift` + `Arrow Right`
Manage Tasks Outdent selected task (promote subtask)	`Alt` + `Shift` + `Arrow Left`
Manage Tasks Edit Task (or any other field)	`F2`
Manage Tasks With multiple tasks selected: Link Tasks	`Ctrl` + `F2`
Manage Tasks With multiple tasks selected: Unlink Tasks	`Ctrl` + `Shift` + `F2`
Manage Tasks Open 'Task Information' Window for current Task	`Shift` + `F2`
Manage Tasks Open 'Assign Resources' Window for current Task	`Alt` + `F10`
Manage Tasks Insert new Task at current Position	`Insert`
Manage Tasks Collapse / Hide Subtask(s)	`Alt` + `Shift` + `-`
Manage Tasks Expand / Show Subtask(s)	`Alt` + `Shift` + `=`
Manage Tasks Expand All / Show All Subtasks	`Alt` + `Shift` + `*`
Change Time Scale View Move the Time Scale view to the right / to the left	`Alt` + `Arrow Left` / `Alt` + `Arrow Right`
Change Time Scale View Move to start of the Time Scale (typically current date)	`Alt` + `Home`
Change Time Scale View Zoom in Time Scale (show smaller time units)	`Ctrl` + `[` / on numeric keyboard
Change Time Scale View Zoom out Time Scale (show larger time units)	`Ctrl` + `*` on numeric keyboard
Change Time Scale View Bring Time Scale into focus for current Task	`Ctrl` + `Shift` + `F5`
Edit Fields Accept an entry	`Enter`
Edit Fields Cancel an entry	`Esc`
Edit Fields Delete one character to the left	`Backspace`
Edit Fields Delete one character to the right	`Delete`
Edit Fields Delete one word to the right	`Ctrl` + `Delete`
Edit Fields Extend the selection to the end / to the start of the text	`Shift` + `End` / `Shift` + `Home`
Edit Fields Turn Overtype mode on or off	`Insert`
Edit Fields Mark entry or selection as bold	`Ctrl` + `B`
Edit Fields Mark entry or selection as italic	`Ctrl` + `I`
Edit Fields Mark entry or selection as underline	`Ctrl` + `U`
Edit Fields Open Calendar (press escape twice to leave field)	`Alt` + `arrow down` on date field
Access Projects 2010 Features Print Menu	`Ctrl` + `P`
Access Projects 2010 Features Open Menu	`Ctrl` + `O`
Access Projects 2010 Features Save Project	`Ctrl` + `S`
Access Projects 2010 Features Find Menu	`Ctrl` + `F`
Access Projects 2010 Features Goto Menu	`Ctrl` + `G`
Access Projects 2010 Features Replace Menu	`Ctrl` + `H`
Access Projects 2010 Features Insert Hyperlink	`Ctrl` + `K`
Access Projects 2010 Features Jump to ribbon menus	`Alt` + `J`
Access Projects 2010 Features Cut / Copy / Paste	`Ctrl` + `X` / `Ctrl` + `C` / `Ctrl` + `V`
Access Projects 2010 Features New Project	`Ctrl` + `N`
Access Projects 2010 Features Start Spellcheck	`F7`
Navigate Projects Help Open the Help window	`F1`
Navigate Projects Help Close the Help window	`Alt` + `F4`
Navigate Projects Help Switch between Help and active program	`Alt` + `Tab`
Navigate Projects Help Go to Projects Help Home	`Alt` + `Home`
Navigate Projects Help Select the next item / previous item	`Tab` / `Shift` + `Tab`
Navigate Projects Help Perform the action for the selected item	`Enter`
Navigate Projects Help Move back to the previous / forward to next topic	`Alt` + `Arrow Left` / `Alt` + `Arrow Right`
Navigate Projects Help Scroll up / scroll down	`Arrow Up` / `Arrow Down`
Navigate Projects Help Scroll larger amounts up or down, respectively, within the currently displayed Help topic.	`Page Up` / `Page Down`
Navigate Projects Help Print the current Help topic.	`Ctrl` + `P`
Navigate Projects Help Search on page. Press escape to close search window	`Ctrl` + `F`
Navigate Projects Help Switch among areas in the Help window	`F6`
Navigate Projects Help Select next / select previous item	`Arrow Down` / `arrow up` in Table of Contents
Navigate Projects Help Expand or collapse the selected item	`Arrow Right` / `arrow left` in Table of Contents