Seeking Advice: How to Professionally Invite Employees to Our 1st Anniversary Celebration?

Good afternoon seniors. Coming month, we are planning to celebrate the 1st-anniversary function. For that, I need your help.

Invitation Format

1. What is the professional format to invite all employees? I have to put it on the notice board.

Agenda Preparation

2. What agenda can I prepare?

Firstly, I want to thank all seniors because, even though I am new to this job, I am learning so many things from your valuable postings and suggestions. Please help me.....

Regards,
Anu

Invitation for Anniversary Celebration

This is not a notice; it is an invitation for the Anniversary Celebration. You can prepare the Anniversary Celebration Invitation in PPT format, take the printout, and display it on the notice board. Please send the same through email as a copy-paste and attachment to all email users and VIPs.

Agendas can be given in hand during the celebration while entering the function place.

With warm regards,

Regards,
S. Bhaskar
[Phone Number Removed For Privacy Reasons]

Normally, starting with "To all the Staff members" addresses everyone's concerns. The management wishes to proudly inform you all that our company is completing one year in the market, and on that occasion, we are planning to organize the following events:

(i)

(ii)

(iii)

(iv)

You are all cordially invited to participate and make the event successful. This is a simple format. You can make it into a presentation and send it via email. Take a printout and keep a copy in prominent places and on the office notice board. Will this serve your purpose, dear?

Regards

Dear Sir,

We want to celebrate our center's completion of 5 years anniversary. I need help on how to write an email to invite the entire team. Please suggest.