I trust you are well,
You can add a large amount of users 15-30 and on Wifi they are not limited to the network they use.
However the bandwidth is shared, there will be an increase in data usage and decrease in speed.
If you require further assistance,
please send a message to our WhatsApp helpline: https://whatsapp.afrihost.com
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or see our FAQ page: http://faq.afrihost.com