I have several girlfriends who all know I am seeing other girls.

All are reluctant to share, and have mixed feelings about playing with other girls.

Other than brutal honesty, i.e. 'look, this is how it is' any successful stories/advice about combining girls into group dates/fun?

Honestly, I like all of them (and for different reasons) but it's a scheduling hassle at times to see them all and it would simplify my life greatly just to have group dates/sex.

inb4 'humble brag', there's many who are far more accomplished than me here. I genuinely want to hear from others who have tried and either succeeded or failed at this.