1.) Take DW
2.) Place a crate
3.) After breaking the crate, it should wait 15 minutes and then lock the access to the bases.
4.) Upload it.
5.) Congratulations, you made a big favour for me =).

Why don't you just take it out of the Bank Robbery levels?

I don't understand how it really works =))) and I need it to be timed to 15 minutes.