In most of the application in SAP Cloud ALM for operations you can find the used memory and the appropriate Housekeeping Settings to influence the Total Memory size needed. Here are the links to the description of the housekeeping settings of the different applications:

• Business Process Monitoring
  
• Integration & Exception Monitoring
• Real User Monitoring
• Synthetic User Monitoring
• Job & Automation Monitoring
• Configuration & Security Analysis
• Health Monitoring

Be aware that SAP provides you a fair usage concept with 8GB HANA memory in total. If you extend the given memory you might need to subscribe additional memory blocks with our BTP service SAP Cloud ALM memory extension.