Looking to Answer specifically question 2 through 4. If not possible number 2 should be enough. Thank you.

I am supposed to create an activity diagram that presents a series of actions or flow of control in a system. I started with a sports club membership validating if the member is valid to enter the club. How would i draw the activity diagram?

Think about the system that handles memberships for a sports club. The club offers access to various facilities to its members, such as soccer courts, baseball courts, swimming pools, and many others. According to its facilities, the club advertises different types of memberships at different prices. The system's primary function should record memberships and track payments from members to validate access at the entrance gate. Members should be able to renew their memberships or buy more than one membership. After a person becomes a member, they should make monthly payments to access the club facilities. 1. List three functional requirements for the system that describe the capabilities (1) to register members and associate them to the different types of memberships, (2) record payments, and (3) validate access at the entrance. Associate each requirement to a use case. 2. Create an activity diagram for validating access at the club's entrance. 3. Create a class diagram for the information captured by the system (according to the use cases). 4. Create a sequence diagram for granting access to a member whose payments are up to date