Pockets on inside covers of the ChoreoKeeper binder aren’t recommended because they would interfere with movement of the swing-out arms. (Actually, the pockets would be fine; it's papers loaded in the pockets that would get in the way.)
Here's what to do instead: use a high-capacity sheet protector. Depending on the brand, these can hold 50-70 sheets. They’re available at Staples, Amazon, and other office supply stores.
On a ChoreoKeeper binder, inside cover pockets would interfere with the swing-out arms. Do this instead.
High-capacity sheet protector
High-capacity sheet protector, shown filled with 20 pages is ~1/4” thick
Empty high-capacity sheet protector lies flat (may become somewhat stretched out after lots of use)