The Pictures of the Lord are embedded in acrylic stands. The 5 pictures are as follows : 1. Shri Shri RadhaShyamsundar, 2. Shri Shri Panchtattva, 3. Shri Shri Prahlad-Narasimha, 4. Shri Shad-Goswamis, 5. Shri Guru Parampara
If you have a simple flat base alter, you can place the picture sets on the altar as shown in the image. If the alter is built in stair or step-style, then you should place Shri Shri Radhashyamsundar and Shri Shri Prahalad Narsimha on the top stair, then on the second step you can place Shri Panchtattva and below that Guru Parampara and Shad Goswamis should be placed.
The pictures must not be placed directly on the floor of altar. Place some good quality washable soft cloth on the altar floor and then keep the sacred pictures of the Lord and His devotees on that cloth. Keep changing the cloth to maintain cleanliness.