How to put roblox studio workspace back into window

[nicknickphoenix (RoughinIt_Dev)]

I accidently moved the workspace viewer layout into it’s own window:

How would I put it back into it’s previous place, into roblox studio’s window?

[Phazenine (Comrade)]

Drag the window a bit. A cross-like thing should appear. Move your cursor while dragging the window into the center box of the cross. Release. Should be back to normal.