Hello Fotima,
Thank you for posting question on Microsoft Windows Forum!
Based on your query of adding multiple photos to a single slide in PowerPoint. Well! The possible reason for this behavior is that PowerPoint's Photo Album feature is specifically designed to create a brand-new presentation file, automatically spreading your selected photos across multiple slides. If you want to add multiple photos to a single slide in your current presentation, you should bypass the Photo Album tool. The following are some suggestions you can try.
- Open your PowerPoint presentation and go to the specific slide where you want the photos. Click on the Insert tab in the top ribbon. Select Pictures, then choose This Device... (or wherever your photos are stored). In the file explorer window that opens. Hold down the Ctrl key and click on each photo you want to add. Alternatively, click the first photo, hold down the Shift key, and click the last photo to select a range of consecutive images. Then click Insert. All of the selected photos will drop onto your current slide at the same time. You can then click and drag them around to position them, or use the corner handles to resize them.
- Otherwise, you can also simply drag photos from a file explorer window directly onto an open slide in PowerPoint. Open the folder on your computer where your photos are saved and place it side-by-side with your PowerPoint window. Select multiple photos in your folder using Ctrl + Click. Then click and drag the selected group of photos directly onto your PowerPoint slide and release the mouse button.
If the provided suggestions are helpful. Please feel free to click "Accept Answer". Should you have more questions, feel free to leave a message.