Our pool will let you but only on specified parent and toddler sessions when there are extra lifeguards.
I have taken them both several times from ds2 being 8m and Ds1 24m. Its reallly hard. It got a lot harder when ds1 got potty trained and we arrived at baths, got changed, ds1 in armbands, ds2 in floaty seat in the water, ds1 announces 'I need a wee', so out of water, all 3 of us plus swimseat and armbands in a tiny cubicle and I'm trying to hold him on the loo while also holding ds2 in swim seat......
Anyway the way I worked it (with lots of shouting etc along the way
was
get out of car, get buggy out of boot. Put ds2 in buggy, then get ds1 out of car. Enter building.
Changing room, change me first then ds1 who would then play with blow up nemo while I changed ds2 who had to be done last in case he weed in swim nappy. Put ds2 down and fold up buggy, place in corner by lockers and hope no one pinches it! (buggies not allowed on pool side at ours)
Waterside, attendants put armbands on ds1 and ds2 into seat. Enter water. Exhaust myself making sure ds2 doesn't tip over while ds1 needing constant vigilance and running about on the side looking like he's going to jump in. Have heart attack and get out of water, run around poolside with ds2 in swimseat as ds1 heads for large pool....
You get the picture??
Then out of pool, change ds2 first while ds1 wanders about out of sight, put ds2 in buggy. Change ds1 and have constant battle with inflatable nemo as I try to put his clothes on.
IGNORE ALL COMMENTS FROM PEOPLE WITH ONE NOT-YET-MOBILE-CHILD OF 'OOO THAT LOOKS LIKE HARD WORK'
I am by this time dry. No chance of shower or any body lotion etc. Pull on my clothes, push buggy, stagger to car, get us all in, they fall asleep in the car. I arrive home utterly exhausted just as they wake up raring to go
And it got worse when ds2 got mobile and they said he was too big for a swim seat...
Anyway don't let me put you off, you go and have a good time