Hey guys, you need to manually click to upgrade. It takes 14days to process.

I reached out to Maxis Customer Service to inquire about a potential free upgrade for my Family Plan, which encompasses 8 main lines and an additional sub-line, making a total of 9 lines with a current fibre speed of 300mbps. Their response was that no upgrades are available due to the plan's existing low cost. Despite its affordability, I was disheartened to discover that not only are there no plans for future enhancements, but also the maximum speed for Family Plan subscribers is limited to 800mbps. As a dedicated customer, this apparent disregard for service improvement is disappointing and has led me to consider ending my association with Maxis.

since rm499 family plan can have only 8 person, CS said that you can add a sub-line for rm48++ for it. In your case, I think that Maxis will recommend you to get the rm399 one, which have 6 slots. I'm not sure if you can add rm48 for sub-line or not, need to ask CS.