Locking a widget prevents it from being moved, resized, or edited. This helps you avoid making unintentional changes while working on other parts of your document.
Follow these steps:
Step 1:
Select the text widget you want to lock.
To select multiple widgets, hold the Shift key and click to add more widgets.
Step 2:
On the contextual toolbar, click the More (···) icon.

Then click Lock.

Follow these steps:
Step 1:
Select the widget you want to lock.
To select multiple widgets, hold the Shift key and select additional widgets.
Step 2:
On the contextual toolbar, click the Lock icon.

To unlock a widget

Who can lock or unlock widgets?
Anyone with edit access to the document can lock or unlock its widgets.