Check with your accountant on that one - you might not need to reverse charge if it’s a service that would be exempt from VAT if it were supplied in the UK. Though it’s a bit academic if you’re entitled to recover all your input VAT as in that case doing the RC anyway will be cost neutral.
If you do want to RC then you may want to read some of the previous posts on the subject (such as this one I wrote a while back) as it’s not as simple as the QuickFile user interface suggests it should be.