Don’t mention owner of image anywhere. Always make image unique ( Medium or hard ). Use your captions & hashtags. Try to not use watermarked images. Use more sources.
Be more specific with your question what are you trying to achieve? What niche are you using? How often do you want to post? Are you trying to repost a certain post from another account? Help me help you
I can’t give you some specific settings, this totally depends on your strategy, how many posts you want to publish, at what time and so on…
My suggestion would be to send posts from repost tool to campaign and publish 5-7 posts per day. You’ll have more control over posting if you use campaigns.