Using Multichannel Templates Without Only One or Two Channels - Google Sheets

Hello,

I'm interested in using a template, specifically the "Detailed Paid Channel Mix Template by Supermetrics" but I would only like to use it for Google and Facebook only. 

When initializing the template, it requests access to Google, Facebook, Bing, and Twitter accounts, however I do not use the two latter channels.

How can I go about using the template without being required to have accounts at all channels?

Thanks,

Ead