You can access all service instance maps and service forms using a keyboard in the accessibility mode.

When the whole map is selected, the information message at the top of the window offers guidelines on how to navigate inside the map.

ActionKeyboard shortcut
Access right-click menus. Space
Expand clusters. Enter
Move into the map pane from the Properties pane. Escape
In the More Options menu, toggle options on and off. Space
Select CIs and connections inside the map. Arrow
In the timeline, you can edit the time inside the current time selection. Number (1-9)
Move through UI elements in the service instance map window. Tab