I searched Conference calls on Fido.ca. Only found that my plan has it. HowToUseIt is on competition's website!
Found here it's 5 callers max. Look at the Phone's booklet to find HowTo is poor advice, if it's lost, Please add the info to Fido.ca!
On smart phones, steps are on the call screen. 1st person answers, a + sign appears to press on to call a 2nd person, 3rd, 4th, & once that person answers, a Fuse symbol shows on screen; the 2nd person connects to the call, and the others.
It's simple info. JACK should provide this info also. Thank you.