Redirect administrators to the WP Admin Dashboard and other users to the specified page on login.

login-redirect-admin-and-users.php

<?php
/**
 * Redirect Administrators to WP Admin,
 * redirect all other users to the specified page after login.
 *
 * Ignores previously set redirects.
 *
 * You can add this recipe to your site by creating a custom plugin
 * or using the Code Snippets plugin available for free in the WordPress repository.
 * Read this companion article for step-by-step directions on either method.
 * https://www.paidmembershipspro.com/create-a-plugin-for-pmpro-customizations/
 */
function my_login_redirect_users( $redirect_to, $request, $user ) {

	if ( empty( $user ) || ! ( $user instanceof WP_User ) ) {
		return $redirect_to;
	}

	if ( $user->has_cap( 'administrator' ) ) {
		$redirect_to = admin_url();
	} else {
		$redirect_to = home_url( '/members/' );
	}

	return $redirect_to;
}
add_filter( 'login_redirect', 'my_login_redirect_users', 99, 3 );