Within the project editor, select media.
Double click on the image to isolate it.
Two buttons will appear near the media, Link and Hover. Select Hover
Select Show tooltip
The text that appears in the box will be the uploaded filename by default. You can rename the text by deleting the previous text and entering in preferred descriptors, titles or modifiers.
Hover your mouse over the image and your new tooltip will appear.
To remove a tooltip, select the media, then select Remove

Add a tooltip to color Automation

Select color Automation (select palette, proportion, Albers’ proportion, combination, contrast, don’ts in Automations.)
Two buttons will appear near the media, Link and Hover. Select Hover
Select Show tooltip
Select Color details
Add in the HEX code of the color or enter any additional information in the text box.
Hover your mouse over the color Automation and the tooltip will appear.
To remove a tooltip, select the media, then select Remove

Modify tooltip settings

Within the project editor, select the Styles section of the right sidebar.
Under the Tooltip grouping, select the tooltip list item
Edit the tooltip styling using spacing, text, text color, background fill, corner radius and stroke.

Within the project editor, select the Styles section of the right sidebar.
Under the Tooltip grouping, select the three-dot icon. In the menu select on Delete.