How do I set up voicmail?

Activate your voicemail
Activate your voicemail by making a plan change at least 48 hours before the end of your payment cycle, and adding the voicemail option (in My Plans > Manage plan > Make changes to this plan > Change plan > Voicemail). This change will come into effect at the beginning of your next payment cycle.
Choose an access code (PIN)
When you activate your voicemail, an access code (PIN) will be sent to you via text message. This code is not required the first time you access your voicemail, but the system will ask you whether you’d like to personalize it. We recommend you do for security reasons. Make sure to choose a PIN you’ll remember easily, all the while keeping in mind that unsafe combinations such as 1234 or 8888 will be rejected.
Know that you can change your NIP directly via your voicemail, or online from your Fizz account (Under: My Plans > Manage My Plan > Advanced Settings > PIN to Access Your Voicemail).

Record your voicemail greeting
You must record a personalized 30-second greeting that people will hear when they are transferred to your voicemail. The system will guide you to record it.
Without the Voicemail option added to your plan, the messaging service won’t answer any call.

Access your voicemail
To access your voicemail, hold the ''1'' key on your phone for a few seconds. For many phones, holding the ''1'' key the speed dial option to reach voicemail. This may vary between different phone models.
The speed dial setting "1" to access voicemail (1-514-647-0999) may vary from one phone to another since it depends on each model’s operating system. Additionally, this setting may not be editable in all phones.
If you are forwarding your calls to another number, the voicemail won’t pick up the call.
To manually access your mailbox, dial 1-514-647-0999 from a “Non Fizz” phone.

Sorry was already posted and can't delete answer.

https://fizz.ca/en/faq/how-do-i-set-up-my-voicemail There you go !!!