Bridging time zones

As part of my Flattening Classroom Certified Teacher course I was introduced to TimeBridge but only as a user.  So for our challenge of setting up a collaborative calendar I ventured in as a planner.

Quad blogging is exactly what it sounds like - 4 of us are going to write a blog post together.  This will be quite a challenge given that when two of us are starting our evenings, one is beginning the following day and I am smack in the middle, crawling into bed.  Therefore I'm sure we will do most of the work together asynchronously (probably via Google docs) but I thought I'd set up a TimeBridge group anyway to possibly have a synchronous chat.

I created a group using the emails of my partners.They will receive an email asking them to join the group.I also sent an email (though TimeBridge) asking them toshare their calendar with me.

A bit ahead of myself I proposed 4 meeting options.In theory I should have waited until they shared theircalendars with me.  Lesson learned.

So far, so good.  I can't figure out how to change the duration of the meetings I suggested.  Going to have to play around or send an SOS email out to my #flatclass group.

Anyone use an online appointment scheduling service they would recommend instead of Timebridge?  Be sure to write why as I'm not sure what TimeBridge is missing (my only comparison is Google Calendar).