They are very versatile pieces of technology and fantastic for personal use and in small groups, if you intend to use the equipment in an educational setting the most appropriate Roger transmitter may be different, or if you want it all to work in larger groups this may change also.
Our recommendation is that a single Roger Pen or Roger Select is absolutely fine in one to one situations and in small groups, also a round table of up to 8-10 people perhaps, and to reduce the numbers down a little with severe / profound hearing loss.
Phonak Roger Clip-on Mic
Then you might want to consider adding extra Roger transmitters to the mix, in a meeting scenario around a table you might add Phonak Roger Clip-on Mics to be used by the chairman of the meeting (maybe other key people as well), and you keep hold of the Pen or Select to control what you emphasise in the meeting along with the Clip-on Mic (s).
Phonak Roger Table Mic
For larger meetings (say in a corporate environment) it may be more appropriate to consider the Phonak Roger Table Mic which works really well for larger groups. Depending on the area to be covered dictates the number of Table Mics required.