How to use git kraken for a force push

I'm using git kraken client gui and I need to perform a force push on a repository. It would be really grateful if someone can guide me the steps to perform a force push on git kraken.

Solution

As @Viktor Seč commented: When you hit push and GitKraken detects that a fast forward update is not possible, it lets you decide wether you want to pull (i.e. merge) changes from upstream or perform a force push:

If this is not shown, then a force push is not necessary and a normal, fast-forward update can be performed.