I haven’t tested this, play with it at your own risk…
In the database, which you can access through phpMyAdmin or similar, the table user_preferences contains one row for that user (referenced in column “assigned_user_id”) that has a “category” column with value “home”. The “Content” column on that row contains the user’s dashboard settings.
I would copy some other user’s “Content” of “Home” into that row, and see if you can work from there.
It is not encrypted, it is merely encoded. I believe it is base64 encoding, you can try pasting that into an online base64 decoder and see the contents.
Anyway, you just have to copy it, not understand it. You design your Home screen within SuiteCRM using drag-and-drop, when it’s ready, you copy that data into other user’s, and they get a similar Home screen. Simple.