What do I do to reserve a computer lab or equipment available at CTSC? Reserve Computer labs, smart rooms or any of the equipment using our reservation system online. What do I need to create a reservation in the online reservation system? You just need an active faculty/staff username and password, this is the same username and password used to access your Hostos e-mail account. For assistance with your Hostos username and password please click here. How do I find out if the Center is open? To enquire about the center Operational hours, contact the Main Office C-513, Tel. 718-518-6523.