A more thorough explanation:

Term: quoad potest
Definition: Quoad potest is a Latin phrase that means "insofar as one is able." It is often used in historical texts to describe the extent to which someone can do something.
Examples:

• He helped as much as he could, quoad potest.
• She donated money to the charity, quoad potest.

In both examples, the phrase "quoad potest" is used to indicate that the person did what they could within their ability. It shows that they were limited in some way, but still did what they could to help.