Is it okay to omit an object when "to infinitive" adjectively modifies a noun?

Researchers say organisations like Mensa need to rethink their membership - they currently require an IQ higher than 148 to join.

https://www.google.com/amp/s/www.dailymail.co.uk/sciencetech/article-2250681/amp/IQ-tests-meaningless-simplistic-claim-researchers.html

Q1)It seems like there is no need to write an object of "join" like below,

"...148 to join them", but if context is clear, is it okay to omit "them"?

Q2)If Q1 is correct, are the sentences below correct if context is clear enough that anyone can understand what is the implied object?

A. I don't have any information to help.

=I don't have any information that will help you.

B. The company will make a software system to aid.

=The company will make a software system to aid managers.

I think omitting "you" and "managers" are possible if both are already referred to or context is clear, so that anyone can understand the implied objects.